A customizable password input widget with rule validation

• add dependency

      dependencies:
          passwordformfield: 0.0.1
  

• import package

  import 'package:passwordformfield/password_form_field.dart';
  

• Implementation

   PasswordFormField(
      fieldHintText: "Password",
      focusColor: Colors.yellow,
      patterns: [
          FieldPattern(label: '8 characters minimum', pattern: RegExp(r'[a-zA-Z0-9]{8}')),
          FieldPattern(label: 'start with uppercase', pattern: RegExp(r'^[A-Z]')),
          FieldPattern(label: 'contain 3 uppercase letter', pattern: RegExp(r'(.*[A-Z]){3}')), // exactly 3 uppercase letter
         ],
      border: const OutlineInputBorder(),
    ),
  

For proper validation beyond limit, FieldPattern is made available.

Note: Make sure your rule(s) is correct, the package validate with only regular expression passed nothing more.